by Erik Marsja | Dec 10, 2020 | Programming, R
In this data science tutorial, you will learn how to rename a column (or multiple columns) in R using base functions as well as dplyr. Renaming columns in R is a very easy task, especially using the rename() function. Now, renaming a column with dplyr and the rename()...
by Erik Marsja | Dec 4, 2020 | Programming, R
In this data science tutorial, you will learn how to get the absolute value in R. Specifically, you will learn how to get the absolute value using the built-in function abs(). As you may already suspect, using abs() is very easy and to take the absolute value from...
by Erik Marsja | Nov 24, 2020 | Programming, R
In this R tutorial, you will learn how to select columns in a dataframe. First, we will use base R, in a number of examples, to choose certain columns. Second, we will use dplyr to get columns from the dataframe. Outline In the first section, we are going to have a...
by Erik Marsja | Nov 8, 2020 | Programming, R
In this brief tutorial, you will learn how to add a column to a dataframe in R. More specifically, you will learn 1) to add a column using base R (i.e., by using the $-operator and brackets, 2) add a column using the add_column() function (i.e., from tibble), 3) add...
by Erik Marsja | Nov 4, 2020 | Programming, R
In this tutorial, you will learn how to rename factor levels in R. First, we will use the base functions that are available in R, and then we will use dplyr. To rename factor levels using levels() we can assign a character vector with the new names. If we want...
by Erik Marsja | Nov 1, 2020 | Programming, R
In this R tutorial, you will learn how to remove duplicates from the data frame. First, you will learn how to delete duplicated rows and, second, you will remove columns. Specifically, we will have a look at how to remove duplicate records from the data frame using 1)...
